14 Utility Patents
#2 in Koto
#58,129 in Japan
#270,606 in the World
Forward Citations = 451
Company Filing History:
Tanaka Kikinzoku Kogyo K.k.
Catalytica, Inc.
Kosaka Smelting & Refining Co., Ltd.
4. 2 out of 75
Chlorine Engineers Corp., Ltd.
5. 2 out of 14
Dowa Metals & Mining Co., Ltd.
where one patent can have more than one assignee
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